Well Ken
Your photos are excellent. Very well done!
Many thanks for all the info via pm.....really much appreciated.
I have now just got hold of an Aquatica Housing for the D90 with 4 inch dome port (Dont know how true it is but was advisd that internals on D90 are something similar to D300 only difference is body) + Zoom gear to take a Tokina 10-17 Fisheye. Jury is still out on the strobes, however Inon Z240'S are looking like the most likely candidates. (Bazza thanks for advice as well).